content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  final class IxMap<T, R> extends IxSource<T, R> {
  
      final IxFunction<? super T, ? extends R> mapper;
  
      IxMap(Iterable<T> source, IxFunction<? super T, ? extends R> mapper) {
          super(source);
          this.mapper = mapper;
      }
  
      @Override
      public Iterator<R> iterator() {
          return new MapIterator<T, R>(source.iterator(), mapper);
      }
  
      static final class MapIterator<T, R> implements Iterator<R> {
  
          final Iterator<T> it;
  
          final IxFunction<? super T, ? extends R> mapper;
  
          MapIterator(Iterator<T> it, IxFunction<? super T, ? extends R> mapper) {
              this.it = it;
              this.mapper = mapper;
          }
  
          @Override
          public boolean hasNext() {
              return it.hasNext();
          }
  
          @Override
          public R next() {
              return mapper.apply(it.next());
          }
  
          @Override
          public void remove() {
              it.remove();
          }
      }
  }
  